Is CVE-2015-6242 in the CISA KEV catalog?

No. CVE-2015-6242 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-6242?

CVE-2015-6242 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2015-6242?

CVE-2015-6242 has an EPSS score of 2.81% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-6242?

Upgrade wireshark on debian 11 to 1.12.7+g7fc8978-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-6242

MEDIUMEPSS 85th pctl

4.3

CVSS v2

NVD

Description

The wmem_block_split_free_chunk function in epan/wmem/wmem_allocator_block.c in the wmem block allocator in the memory manager in Wireshark 1.12.x before 1.12.7 does not properly consider a certain case of multiple realloc operations that restore a memory chunk to its original size, which allows remote attackers to cause a denial of service (incorrect free operation and application crash) via a crafted packet.

CWE-20Improper Input Validation

How to fix

Remediation Available

wiresharkDebian

Fixed in:1.12.7+g7fc8978-1CVE-2015-6242

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.81%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Vendor Advisory1

wireshark.org

Third-Party Advisory1

oracle.com

Issue Tracking1

bugs.wireshark.org

Other references6

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

Embed a live status badge for CVE-2015-6242

Markdown

[![CVE-2015-6242](https://tridentstack.com/cve/badge/CVE-2015-6242.svg)](https://tridentstack.com/cve/CVE-2015-6242)

HTML

<a href="https://tridentstack.com/cve/CVE-2015-6242"><img src="https://tridentstack.com/cve/badge/CVE-2015-6242.svg" alt="CVE-2015-6242"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.